Isolation of Multidrug-Resistant Bacteria as an Independent Mortality Factor in Patients with Suspected Sepsis at National Medical Center of the West

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Adán Pacifuentes Orozco
Eva Daniela León Ortiz
Armando Espinoza Santana
Jaqueline Hernandez Sosa
Lizeth Montelongo Cedillo
Valery Rachell Gutiérrez Islas
Juan César Pérez Herrera
Bertha Gabriela García Duarte
Carlos Ignacio García Castañeda

Abstract

Introduction: In the changing epidemiological landscape sepsis corresponds to one of the main causes of in-hospital mortality, in third level care units the presence of multidrug resistant bacteria to antimicrobials correspond to a severe health problem, there are studies in intensive care units on mortality related to the appearance of multidrug resistant bacteria in cultures, however infection by multidrug resistant bacteria can appear at any instant of hospital stay which can become an independent risk factor for the appearance of mortality.


Aims: To associate the isolation of multidrug-resistant bacteria as an independent mortality factor in patients with suspected sepsis at the Centro Médico Nacional De Occidente.


Materials and methods: Place of study: Centro Médico Nacional De Occidente Guadalajara, Jalisco, Mexico. Type of study: Clinical, retrospective cohort type. The clinical records of patients admitted during the study period were searched. Patients with suspected sepsis according to the definition of the Third International Consensus were identified from continuous medical admission and followed up throughout their stay in the hospital. Patients with culture results were evaluated. Two follow-up cohorts were identified: those who presented isolation of multidrug-resistant bacteria at any time during hospitalization and the second cohort those who did not present isolation of multidrug-resistant bacteria; an initial determination of the variables was made and then the clinical records of the patients during their stay in the services were reviewed to search for in-hospital mortality. The association between the occurrence of multidrug-resistant bacteria and mortality was estimated by Hazard Ratio (with 95% confidence intervals).


Results: A total of 94 patients were included with a minimum age of 16 years and a maximum age of 91 years with a mean of 48 years with a standard deviation of 20 years. A total of 93 cultures were included of which 21 (22.3%) were isolated with bacterial resistance. Of the positive cultures 42 % (9) were blood culture, 10 % (2) were surgical wound cultures, urine culture 23 % (5), bronchial aspirate 23 % (5). Regarding mortality, 57 % of the patients who presented bacterial resistance presented mortality, presenting a Hazard Ratio of 3.371 with 95% CI (1.125-10.100) p=0.02 Table 2 and 3. Regarding mortality with the different types of bacteria, it was 40 % in Gram negative bacteria with a Hazard Ratio of 1.875 (0.291-12.089), while it was 20 % in Gram positive bacteria, which was not statistically significant p=0.3.


Conclusion: Isolation of multidrug-resistant bacteria is an independent mortality factor in patients with suspected sepsis at Centro Médico Nacional De Occidente. There is no relationship with the isolation of Gram-positive and Gram-negative bacteria type with respect to patient mortality.

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Adán Pacifuentes Orozco, Eva Daniela León Ortiz, Armando Espinoza Santana, Jaqueline Hernandez Sosa, Lizeth Montelongo Cedillo, Valery Rachell Gutiérrez Islas, Juan César Pérez Herrera, Bertha Gabriela García Duarte, & Carlos Ignacio García Castañeda. (2023). Isolation of Multidrug-Resistant Bacteria as an Independent Mortality Factor in Patients with Suspected Sepsis at National Medical Center of the West. International Journal of Medical Science and Clinical Research Studies, 3(12), 3041–3052. https://doi.org/10.47191/ijmscrs/v3-i12-23
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